css3 高光扫描 ! 干货！

```

#app{

width: 200px;

height: 300px;

background:black;

overflow: hidden;

}

@keyframes aniBlink120{from{margin-left:-60px}to{margin-left:260px}}

@-webkit-keyframes aniBlink120{from{margin-left:-60px}to{margin-left:260px}}

#app a:before{content:'';

position:absolute;

width:60px;

height:300px;

margin-top:0px;

margin-left:-260px;

overflow:hidden;

z-index:6;

background:-moz-linear-gradient(left,rgba(255,255,255,0) 0,rgba(255,255,255,0.4) 50%,rgba(255,255,255,0) 100%);

background:-webkit-gradient(linear,left top,right top,color-stop(0%,rgba(255,255,255,0)),color-stop(50%,rgba(255,255,255,0.4)),color-stop(100%,rgba(255,255,255,0)));

background:-webkit-linear-gradient(left,rgba(255,255,255,0) 0,rgba(255,255,255,0.4) 50%,rgba(255,255,255,0) 100%);

background:-o-linear-gradient(left,rgba(255,255,255,0) 0,rgba(255,255,255,0.4) 50%,rgba(255,255,255,0) 100%);-webkit-transform:skewX(-25deg);transform:skewX(-25deg)}

#app:hover a:before{

-webkit-animation:aniBlink120 .5s ease-out forwards;

-moz-animation:aniBlink120 .5s ease-out forwards;

-o-animation:aniBlink120 .5s ease-out forwards;

animation:aniBlink120 .5s ease-out forwards;

}

```